2021 filings reveal Pfizer had reason to believe its COVID-19 vaccine's effectiveness waned, although the company did not choose to release the information until months after the revelation.
"[T]he fact that the studies that do exist (including our own late addition) fail to show convincing evidence of benefit from masking suggests that, if there is a benefit, it is a rather modest one, i.e. masks may reduce the risk slightly but do not guarantee you won’t get infected," said Dr. Breathnach.
After BBC reporter James Clayton asked Elon Musk about Twitter's policy change regarding "misinformation" for COVID-19, Elon Musk asked if the "BBC changed its COVID misinformation?"